AOZ8033DIL Equivalent & Substitute Parts

Part Overview

The AOZ8033DIL is a 2nd order RC (Pi) EMI filter manufactured by Alpha & Omega Semiconductor Inc., designed for data line filtering in mobile device applications. This component features 4 channels with 100 Ohm resistance and 28 pF capacitance per channel, rated for 20 mA operation at 5V. The part is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

AOZ8033DIL

Alpha & Omega Semiconductor Inc.In Stock: 6422AOZ8033DIL Datasheet

Current PartRFQ

VEMI45AA-HNH-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 7865VEMI45AA-HNH-GS08 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AOZ8033DIL is determined by the following critical parameters:

Mandatory Matching Criteria:

• Filter technology: RC (Pi) topology
• Filter order: 2nd order
• Number of channels: 4
• Package type: 8-UFDFN Exposed Pad
• Resistance per channel: 100 Ohms
• ESD protection: Present

Allowable Variation Parameters:

• Capacitance per channel: Tolerance within filter design specifications
• Cutoff frequency: Determined by R-C values; minor variations acceptable if within application bandwidth requirements
• Current rating: May exceed original specification
• Operating temperature range: May exceed original specification
• Voltage rating: May exceed original specification

The VEMI45AA-HNH-GS08 qualifies as a substitute based on matching core filter architecture, channel configuration, resistance value, package footprint, and ESD protection. Variations in capacitance (36 pF vs. 28 pF), cutoff frequency (100 MHz vs. 90 MHz), and current rating (4 A vs. 20 mA) reflect component evolution while maintaining functional compatibility for data line filtering applications.

Parameter Comparison

Engineering Selection Recommendations

The VEMI45AA-HNH-GS08 is suitable as a direct substitute for the obsolete AOZ8033DIL in data line filtering applications for mobile devices. Both components maintain ROHS3 compliance and identical MSL ratings, ensuring regulatory and manufacturing process compatibility.

The substitute component is in active production status, providing supply chain continuity. The higher current rating (4 A vs. 20 mA) and extended operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C) represent performance enhancements that do not compromise backward compatibility.

The capacitance increase from 28 pF to 36 pF results in a modest cutoff frequency shift from 90 MHz to 100 MHz. This variation remains within typical filter design tolerances for mobile device data line applications. The 8-UFDFN package footprint is mechanically compatible, with minor dimensional variations that do not affect PCB layout or assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the VEMI45AA-HNH-GS08 be used as a direct replacement on existing PCBs designed for the AOZ8033DIL?

A: Yes. Both components use the 8-UFDFN Exposed Pad package with compatible footprints. The dimensional variations (1.70 mm × 1.35 mm vs. 1.80 mm × 1.20 mm) are within standard PCB assembly tolerances and do not require layout modifications.

Q: How does the capacitance difference (36 pF vs. 28 pF) affect filter performance?

A: The higher capacitance in the VEMI45AA-HNH-GS08 results in a cutoff frequency of 100 MHz compared to 90 MHz in the AOZ8033DIL. This represents approximately an 11% increase in cutoff frequency. For data line filtering in mobile devices, this variation remains within acceptable performance parameters.

Q: Is the higher current rating (4 A vs. 20 mA) a concern for circuit compatibility?

A: No. The substitute component's higher current rating indicates improved performance capability and does not create compatibility issues. The component will operate safely at the original design current of 20 mA.

Q: Do both components meet the same regulatory and compliance standards?

A: Yes. Both the AOZ8033DIL and VEMI45AA-HNH-GS08 are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings of 1 (Unlimited). They meet the same regulatory requirements for mobile device applications.

Q: What is the significance of the extended operating temperature range in the substitute?

A: The VEMI45AA-HNH-GS08 operates from -40°C to 125°C, compared to -40°C to 85°C for the AOZ8033DIL. This extended range provides additional thermal margin and may improve reliability in applications subject to elevated operating temperatures.

Q: Are there any packaging or procurement differences between these components?

A: The AOZ8033DIL is supplied in standard packaging, while the VEMI45AA-HNH-GS08 is available in Tape & Reel (TR) format. Both use the same 8-UFDFN package type and are compatible with standard SMD assembly processes.